Mishimoto Radiator Fan Issues

switch back to your stock fan

The GT has a two speed fan control. When the CCRM changes from low speed to high speed, the power actually switches to a different wire. So it would be expected to see a single speed fan connected to only one leg to shut off when the CCRM changes speed.

There are several ways to fix this depending upon your set up.

Do you have a single fan or dual fans?

Do you want the fans to change speed or change the number of fans running?

This will require some electrical modifications. Having a set of wiring diagrams will be a big help. If interested in getting yourself a set I maybe able to help. PM if interested.

OBTW, I have helped others previously on this very same question.

Insert a ballast resister in the low speed line. Some experimentation will be needed to determine the correct value. As an option consider using the ballast resister from a late model (03+) stock Mustang fan.

Tie the high speed and low speed lines together to power the new fan.

On some application a diode is needed between the HS and LS line. Recommend doing this only if needed.

The ballast resister will lower the voltage during low speed operation. The fan should run slower. During HS operation, the fan will get the full voltage and run at max speed.

This is some great information wmburns! Thanks a lot for helping out in this situation.

Hopefully the OP has figured it out and is no longer having issues?